Mechanical movement.



No. 782,890. PATENTED FEB. 21, 1905. F. G. ZUMDAHL.

MECHANICAL MOVEMENT.

APPLICATION FILED SEPT. 22,1904.

UNITED STATES Patented February 21, 1905.

FREDERICK O. ZUMDAHL, OF ROCKFORD, ILLINOIS.

' t MECHANICAL MOVEMENT.

. SPECIFICATION forming part of Letters Patent No. 782,890, datedFebruary 21, 1905.

Application filed September 22, 1904. Serial No. 225,484.

To all whom it may concern.-

Be it known that I, FREDERICK O. ZUMDAHL, acitizen of the United States,residing at Rockford, in the county of Winnebago and State of Illinois,have invented certain new and useful Improvements in MechanicalMovements, of which the following is a specification.

This invention relates to a new mechanical movement in which beveledfriction means are employed as a driving means for two shafts and eachshaft having a connection with the part to be driven in order that therewill be no cramping of the main driving friction on its shaft.

In the accompanying drawings, Figure 1 is a section on dotted line a,Fig. 2. Fig. 2 is a plan view of my improved mechanical movement. Figs.3, 4, and 5 are sections on dotted line b, Fig. 1, showing the differentpositions of the cones.

The shaft 1 will be termed the driver and is supported in a suitableframe 2. The shaft 3 will be termed the f driven shaft and is alsosupported by the frame 2. The drivingshaft may be rotated by anysuitable power, and the driven shaft may be employed to transmit powerto any mechanism to which it can be applied.

To the shaft 1 is secured a driving element,

the stud 11 is pivotally mounted a hand-lever 12, which is provided withthe usual thumblever and dog engagement with the teeth 10.

From the main frame extends two bearings 13 and 14. The bearing 13supports a shaft This shaft has a worm 16 secured to one end and locatedagainst the bearing 13 and a collar 17 located against the other end ofthe bearing. A cone 18 is secured to the shaft 15 and a sleeve 19 islocated on the shaft and to which the hand-lever 12 is connected by thepins 20. The bearing 14 supportsa shaft 21. This shaft has a worm 22secured to one end The shafts 15 and 21 radiate from the center,

of the driving element, and the cones 18 and 24 are smaller than thespace between the faces 4 and 5 of the driving element.

By means of the hand-lever 12 the cone 18 may be pressed in engagementwith the face 4 of the driving element and the cone 24 in engagementwith the face 5 of the driving element, asshown at Fig. 3. By means ofthe hand-lever both cones can be held free of engagement with the facesof the driving element, as shown at Fig. 4. At Fig. 5 the handle ve1'holds the cones 18 in engagement with the face 5 of the driving elementand the cone 24 in engagement with the face 4 of the driving element.WVhen the cones are held free of the driving element, they will remainat rest. When in engagement with the faces of the driving element, asshown at Fig. 3, the shafts will be revolved in the direction indicatedby the arrows thereon, and when in the positions shown at Fig. 5 theshafts will be revolved in the opposite direction. As each shaft has aworm engagement with the worm-wheel 27, secured to the shaft3, and theWorms located on opposite sides of the wormwheel, it is evident that thestrain on the worm-wheel willbeequalized, which will reduce the frictionof the shaft 3 in its bearings and will increase the driving power ofthe shaft.

By the employment of the two cones, one bearing against the face 4 ofthe driving element and the other against the face 5 of the drivingelement, it will be seen that there will be no transverse strain on theshaft 1, which would occur if only one cone element was employed, and atthe same time double the power is transmitted to the driven shaft.

In the drawings I have shown the driving element in the form of a wheelhaving a central hub and two beveled surfaces, in place of which twoseparate beveled surfaces might be employed and secured to the shaftwithout departing from the scope of my invention.

I claim as my invention 1. A mechanical movement comprising a drivingelement having two beveled frictionsurfaces, two shafts havingaconnection with the part to be driven, a cone supported by each shaft,one of the cones adapted to be placed in engagement with one of thebeveled friction-surfaces and the other cone adapted to be placed inengagement with the other beveled friction-surface.

2. A mechanical movement comprising a driving element having two beveledfrictionsurfaces, two shafts having aconnection with the part to bedriven, a cone supported by each shaft, one of the cones adapted to beplaced in engagement with one of the beveled friction-surfaces, theother cone adapted to be placed in engagement with the other beveledfriction-surface, and means for disengaging the cones from the beveledfriction-surfaces.

8. A mechanical movement comprising a driving element having two beveledfrictionsurfaces, two shafts having a connection with the part to bedriven, a cone supported by each shaft, one of the cones adapted to beplaced in engagement with one of the beveled friction-surfaces, theother cone adapted to be placed in engagement with the other beveledfriction-surface,and means for simultaneously transferring the conesfrom their respective beveled friction-surfaces into engagement with theother beveled friction-surface.

4. A mechanical movement comprisinga driving element having two beveledfrictionsurfaces, a worm wheel, two shafts, a worm supported by eachshaft and located in engagement with the worm-wheel on opposite sides ofthe center of the wheel, a cone supported by each shaft, one of thecones adapted to be placed in engagement with one of the beveledfriction-surfaces and the other cone adapted to be placed in engagementwith the other beveled friction-surface.

5. A mechanical movement comprising a driving element having two beveledfrictionsurfaces, a worm-wheel, two shafts, a wormwheel supported byeach shaft and located in engagement with the worm-wheel on oppositesides of the center of the wheel, a cone supported by each shaft, one ofthe cones adapted to be placed in engagement with one of the beveledfriction surfaces, the other cone adapted to be placed in engagementwith the other beveled friction-surface, and means for disengaging thecones from the beveled friction-surfaces.

6. A mechanical movement comprising a driving element having two beveledfrictionsurfaces, a worm-wheel, two shafts, a worm supported by eachshaft and located in engagement with the worm-wheel on opposite sides ofthe center of the wheel, a cone supported by each shaft, one of thecones adapted to be placed in engagement with one of the beveledfriction surfaces, the other cone adapted tobe placed in engagement withthe other beveled frictionsurface, and means for simultaneouslytransferring the cones from their respective beveled friction-surfacesinto engagement with the other beveled frictionsurface.

FREDERIOK (J. ZUM DAHL.

WVitnesses:

A. O. BEHEL, E. BEI-IEL.

